Hitachi D-2330 ............ Not working  
Phillips N2221 ............ Not working  
Trio TR-601 MD ............ Was working for a bit, needs an EU power plug
MIDIman MicroMixer 18 ..... Not working  
AKAI GXC-36D .............. Not working, needs an EU power plug

Boss GE-7 ................. Works  
MXR six band EQ ........... Works but the 1.6k band is on or off  
Boss HM-2 ................. Works but incredibly road worn exterior and busted 9 volt plug inside, no problem to run off of wall power  
Artec Analog Delay ........ Technically works but time knob range limited to just a smidgen up around the shortest time.  
Yamaha MT3X ............... Works
EH Ring Thing ............. Works
Gollmer CompoSus .......... Works